Method of making cathodes

摘要

The invention concerns an improved method of interconnecting carbon blocks intended for the construction of cathodes in cells for electrolysis of aluminum and the steel bars which connect these blocks to the source of current. The method comprises forming the current supplying bars in two portions or half-bars which are housed in channels provided in the carbon blocks, the half-bars being rigidly connected to the blocks by bedding with cast iron or steel. One or more anchoring points provided near the end of the blocks holds the half-bars in position, while the ends of the bars near the middle of the blocks can expand freely in zones left for the purpose.